chevy trans with 1st gen
 

well im not proud but i got a 84 k30 gmc with a 1st gen and 4l60. problem is the trans wont hold up. so can the 4l60 be built to hold up the the cummins?

it can be built stronger but not sure how far.. there is a kit to put in a th350 that extense the case with a longer output shaft and spacer.. a th350 or 400 will hold if built rite.. the internals on the 700r4 and 4l60 are a bit small

it had a th400 behind her till the kid blew that up. from what i understand the th350 is no stronger than the 700 but od is the week link, and that kills 3rd

a th350 is much stronger than a 4l60.. I have a 350 in a prostreet nova making 1100 hp and it lives well.. the prob. is very few people know how to build them,, they think bigger is better.. not always true..most people read to many magazines and just order from jegs or summit racing..althought I am a 350 guy and build them for people alover the world I would run a th400... dual feed the directs,run 4 interm. clutches and mill the direct and forward piston to take 7 frictions run the 4l80 front drum and sprag and 4l80 band and pin with a deep pan and your good to go.. last time I pulled my cummins suburban across the scales with my 26 foot toyhauler with the nova in it it was almost 22,000 pounds..trans temps run no more than 190 in the pan.. or do a 4l80 the same as a th400 build. I wish you lived closer I would make you a believer..:c:

---AutoMerged DoublePost---

btw google jakes trans and dual feeding a th400 and or jakes shoe trans mods.. this guy is a god and builds transmissions to live.. he is not like the amco or mr transmission guys... theres much more that slapping one together or a shift kit.if I can be any help let me know..:c:

thinking of doing a 4l80e with a 205. can they hold up in stock form?

prob. not in long run... you will like a 4l80 that's built...:c:

so instead of putting money into a 4l80 and building it up then matching it up to a 205. i should just pull the 4l60 build it up and keep the 208. rebuilding one shouldnt be a prob, will be my first and my buddys first but we also have a diesel mechanic that said he would help.

we have a rebuild kit for a 4l60 already i want to say 88 or 89 part of the kit is for 700r4 and the other is marked for a 4l60e or just a 4l60 but anyway i know theres no sense in putting that back in but what parts need to be upgraded? we have a lath and mill just incase we need to do some work

I would build and modify the 4l80 and be done with it..:c:

well i dont have the 4l80 or 32 spline 205 or adapter plate. thinking its going to be 1k-1.2k just for the trans and transfer case with adapter then i have to build it up. i have a little money but i dont want to piss it away lol but at the same time i dont want do this agian

---AutoMerged DoublePost---

not to mention drive shafts

I totally understand!!

so.. do you think it would cost the same to build the 4l60 up vs building the 4l80e up? looked at raptor `700r4 but i dont need a whole trans just parts, so i looked at their parts list and its confusing as heck. then like i said i have some stock parts just sitting so i want to try to save some cash and use them. but if i need to upgrade the stock parts then i will but i have no ideal what parts i need

a stock rebuild for the 4l80 sould not be different than the 60... the biggest thing is dual feeding it and getting in the extra clutches.. and modifying the plate.. a lot of people want to just do a shift kid to firm up shifts , that works to a point but a person has to remember the more line pressure you have it shoves the converter forward and is hard on the thrust on any engine..volume will give the firm shift and more durable than pressure.. some of the raptor builds are great set ups... patc has a lot of good deals:c:

Keep it simple. Go with a Dodge trans and a 205. Doesn't matter if its manual or auto, but all the aftermarket support is there for a lasting combination.

Getrag G360/NP205 (factory combo)
A518(non-lockup)/NP205 (factory combo)
47RH(lockup)/NP205 (piece together with factory parts)
47RE(lockup)/NP205 (piece together with factory parts, and controller)
NV4500/NP205 (piece together with factory parts)
NV5600/NP205 (piece together with factory parts)

... plus, a divorced NP205 works with any 2wd trans that came from a 5.9 cummins - pickup truck, or medium-duty truck.

just talked to a transmission shop he once i told him what its going behind he said he wouldnt build it for no amount of money. he said to go with a 400 or 47rh. he said in order to fix the 3/4 clutches in the 700 you have to firm up the shift then with the cummins you start breaking hard parts. so now i think ill be going with dodge, maybe get a nv4500 or 47 but last search for them showed up nothing. maybe give the junkyards a call

Buy a whole truck for parts and sell off what you don't need. Much cheaper that way.

just a question, of course im having problems with finding a passengers side drop trans mission for the cummins(divorced is a option) but is there any 94+ cummins trans that you can make passengers side?

---AutoMerged DoublePost---

what about overdrive from gear vendor?

You can use a 47rh with a clocking ring that also acts as a spacer for the NP205 (I used a Skyjacker unit on a Ramcharger conversion and it worked perfectly) or run an NP241D/HD from an '89-'93. The 241 will bolt up clean. The clocking angle is a bit different, so some people overfill the transmission a bit to make sure the TC gets its share of the fluid. I personally don't think it's necessary and don't know how comfortable I am with overfilling the transmission.

Just remember that you need a 23 spline TC from an automatic truck.

http://i333.photobucket.com/albums/m...psaac3aeda.jpg
was told this is a 727 with 205 but i dont know jack about drodge trans but the tail shaft to the 205 look too long is this a od unit?

The 4L60 will never hold up to the Cummins. I tried to run one behind my Cummins. I had it behind the turbo charged 6.2, and it did great behind it. I had built it up to where it would take up to 500 ft.lb. of torque, but not at 1600 rpm's. And that was with out a lock up converter. It would be a lot worse with one. I now run a 4L80e and have for 15 years with no problems.

If it is, indeed a 727, the tail shaft isn't too long; what you're seeing between the transmission and the transfer case is the extension housing, not an overdrive. The 727 4x4 tail shaft extends about 8.5" from the back of the transmission. The factory extension facilitates the mounting of a New Process Gear transfer case and serves to support the entire assembly on the crossmember.

I can't see enough of the transmission to tell you if it's a 727 (it's likely, since 727s weren't overdrive, the designation for the overdrive Torqueflite 8 is "A518"/"46RH"; "A618"/"47RH" for overdrive and lockup), but that's definitely an NP205, though.

makes sense so the cross member hold the t case.

The extension housing bolts to the crossmember, supporting the transfer case, transmission and preventing the engine from tilting backwards until it hits the firewall or breaks the engine mounts.

kind of confused what direction to go with. have a sm465 but from what i understand the small clutch wont hold up to the cummins. i think i have the bread truck adapter plate cause the cummins is clocked some.

have a 10 speed but i will lose 4wd

any gm trans with od isnt strong enough to hold up to the cummins.

have found a getrag with 205 and 205 combo for 1800. dont know the value of it and what else i need
"Getrag 4x4 & NP205 for cummins complete also have pedal assy. phone calls only" is all thats in the listing. want to find out more before i give him a call
think i found what i need
Getrag G360 5 spd trans
Np 205 transfer case
engine adapter- Cummins VE pump engine style
bellhouse
clutch
pressure plate
flywheel
Master and slave
crossmember and fram chunks for templates
4wd floor hump tin
pedals
all hardware
shifters

It'd cost you more than $1800 to piece that together. Hell, with the way 205 prices are these days, you're liable to pay upwards of $600-$800 for the transfer case alone.

just called the guy, he said its everything came off a cummins but no drive shafts. for some reason i have a fetish for drive shafts like i cant have enough lol

You can't have enough shafts? hmm

drive shafts lol. gotta collect them all:jump:

Nah, man, I'm just breaking your balls. You're going to get it, though, right?

yeah we just had a little snow storm today, so tomorrow i will try to make it out and pick it up

sooooo i called the guy up Tuesday (had money in hand) he says the trans in still in the truck. i asked when he thinks he will pull it he says hopefully by this weekend and he would call me:argh:

NV 4500 NP208
 

I have a NV 4500 out of a 97 Chevy and an NP208 transfer case that is weak...... I know the NP205 was as close to bullet proof as they came. How many Spline Case am i looking for? and does anyone know what year, model, manufacturor would have had them in stock?

You need a 32-spline NP205 with a round pattern. Those came in 85-91 K30. Its still not a direct bolt up.... needs a spacer and/or a notch cut in the NV4500 for the shift rail.

the 208 isnt real weak. they where on the military trucks and i know a couple guys who plow snow with them. this weekend i also pulled a sled with a 208 in the hot street class. held up fine even with a transmission that only has 1 and 2nd dont need anything higher than that when pulling

Unfortunately my 208 is leaking fluid..... most likely just a seal but considered upgrading while i was there.....but im not totally against leaving the 208 in place either

---AutoMerged DoublePost---

doesnt this transfer case need to be a passenger side drop as well? I found a 205 off of a 4l80E that would most likely be what im looking for and they want 600 for transmission and all. Seems reasonable except the transfer case is drivers side drop

idk all you have posted is 91.5 cummins chevy. if your chevy is pre 87 (91 for crew and blazers) then yes you have a solid front axle and need passengers side drop. if you have independent front then you would be looking at drivers side. but the 208 is from what i know only passengers side

My Chevy is an 86....... so that helps a bunch.... I need a passenger side drop. That is what my 208 is currently as well. I think that limits me to 85-87 K 30 chevy NP205. Where i was looking for an85 to 91. Unless its a 1 ton suburban which would have had the non independent front end.

whats wrong with your 208?